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Review on πŸ”¬ FORENSICS O2 Detector: NIST Calibration & Certificate, Dust & Explosion Proof, USB Rechargeable, Sound/Light/Vibration Alarms, 0-30% Oxygen by William Rothstein

Revainrating 4 out of 5

Small and light

This is an oxygen tester. They are enough for a test period of about a year. Store it in plastic to make it last as long as possible, as exposure to room air will shorten its lifespan. We ended up sending it back and paying a pro to test our machines.

Pros
  • Amazing
Cons
  • Big and bulky